Struct cw_storage_plus::Item [−][src]
pub struct Item<'a, T> { /* fields omitted */ }
Expand description
Item stores one typed item at the given key. This is an analog of Singleton. It functions just as Path but doesn’t ue a Vec and thus has a const fn constructor.
Implementations
save will serialize the model and store, returns an error on serialization issues
load will return an error if no data is set at the given key, or on parse error
may_load will parse the data stored at the key if present, returns Ok(None)
if no data there.
returns an error on issues parsing
Loads the data, perform the specified action, and store the result in the database. This is shorthand for some common sequences, which may be useful.
It assumes, that data was initialized before, and if it doesn’t exist, Err(StdError::NotFound)
is returned.
If you import the proper Item from the remote contract, this will let you read the data from a remote contract in a type-safe way using WasmQuery::RawQuery.
Note that we expect an Item to be set, and error if there is no data there